As the placment of reserve units is a bit more important than the VE rolls, having the advantage of knowing what and where your opponent places can be critical. Which player (1st - who is usually the attacker or 2nd) does this first should have been spelled out. That is a rules hole and in some cases the Memoir '44 rules could use some tightening.

CB #2 Rules p. 6:

Quote:

VICTORY EVENTS ROLLS
After the next battle is set-up but prior to any other activity, (like Reserve rolls for the new battle) do the following:

Each player rolls two dice plus one die for each battle won up to this point in the campaign (including the battle just won if appropriate).

Starting with the player that moves first in the scenario you are about to begin, resolve the dice rolls using the following Events table *. Start with any infantry rolled and finish with any flags.

* the TABLE mentioned appears on p.7, top left side of the page.

Seems to be spelled out clearly. The player who moves first in the upcoming scenario rolls dice first. Rolls VE dice first; rolls reserve dice first; moves and rolls as attacker first.